Code Quiz: Methods to Reduce Clearing Time

The NEC requirement for arc energy reduction

Fill in the blank.

The NEC requirement for arc energy reduction now includes the following choices: __________.

A) an instantaneous trip setting that is less than the available arcing current
B) an instantaneous override that is less than the available arcing current
C) both A and B above
D) neither A or B above

Find the Answer

Answer: C

As noted in Sec. 240.87(B) of the 2017 NEC, t

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